Mobile chair



FIG. 1 is a top, front, left side perspective view of a mobile chair showing our new design;

FIG. 2 is a bottom, rear, right side perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a left side elevational view thereof, the right side being a mirror image of FIG. 7.

The portions of the mobile chair shown in doted lines are not part of the claimed design. 

CLAIM The ornamental design for a mobile chair, as shown and described. 